By contrast, the USA's Jenny Simpson stuck with the pack and coasted down the home straight to take bronze. But Muir has no regrets.
She says: 'I would approach it the same way, definitely, because I would rather lose a medal than come third and think, 'I could have won that race'.
'I could have held back and gone for bronze but, if I did, gold would definitely have gone. So, yes, I did everything I could to win the race. That's what I do.'